JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff2"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/fonts/glyphicons-halflings-regular.woff"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/fonts/glyphicons-halflings-regular.svg"></script>
<h1>This is a long headline. An icon is appended automatically</h1>

CSS

body {
  background-color: #666;
}

h1 {
  color: #fff;
  display: inline-block;
  padding-right: 30px;
}

h1::after {
  color: #fff;
  border: 1px solid #fff;
  top: -3px;
  left: 8px;
  border-radius: 50%;
  padding: 4px 0;
  display: inline-block;
  width: 30px;
  position: relative;
  height: 30px;
  text-align: center;
  margin-right: -30px;
  font-family: 'Glyphicons Halflings';
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  content: "\e258";
}

h1:hover::after {
  background-color: #fff;
  color: transparent;
}